BST in relation with the bordering nations
Bangladesh Standard Time (Bengali: বাংলাদেশ মান সময়) (BST) is the time zone of Bangladesh which is observed throughout the whole country, with a time offset of UTC+6:00. ( Bengali: বাংলাদেশ inc-Latn Bangladesh) officially Bangladesh does not observe any Daylight saving time. Daylight saving time ( DST Bangladesh Standard Time is calculated on the basis of 90. 00° E longitude, which passes over the Harukandi Union of Harirampur Upazila of Manikganj District of Dhaka Division, Bangladesh. Harirampur (হরিরামপুর is an Upazila of Manikganj District in the Division of Dhaka, Bangladesh. Manikganj is a district in central Bangladesh. It is a part of the Dhaka Division. Dhaka Division is an administrative division within Bangladesh.